Rolling tubes without additional rollers arranged inside the tubes

Full Title

Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work > the axes of the rollers being arranged essentially parallel to the axis of the work > Rolling tubes without additional rollers arranged inside the tubes

Classification Context

Section:

PERFORMING OPERATIONS; TRANSPORTING

Class:

MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL

Subclass:

ROLLING OF METAL